GNOME Sudoku 50.alpha

• Port Shortcuts Window to Shortcuts Dialog
  
• Add duplicate warnings preference
  
• Rename "Check Against Solution" preference to "Solution Warnings"
  
• Remove warnings and highlighter settings
  
• Add a backwards compatibility check that disables warning preferences
  if the warnings setting was disabled
  
• Add a new Puzzle submenu with 3 new buttons to share, save or export
  games (!106)
  
• Retire custom game creation, if you have an ongoing custom game make
  sure to finish it before updating or you will lose it (!106)
  
• Reuse custom game difficulty to load games for now (!106)
  
• Save printed games to their own folder
  
• Add mnemonics to print multiple dialog and game completed dialog
  
• Add current highscore to clock box tooltip
  
• In game completed dialog:
  Add "Change Difficulty" button
  Shorten the winning string to "Puzzle Completed!" in most cases
  Bind Escape to return to the start menu
  
• Add Escape shortcut to popdown the number picker
  
• Add RTL support for earmarks
  
• Merge print current puzzle into print multiple dialog
  
• In print multiple dialog:
  Synchronize number of puzzles to multiples of puzzles per page
  Mirror print button with start game button
  Add an ellipsis to Print
  Use only the latest played difficulty to preselect choices
  Don't allow non numeric characters in the spin row
  Fix capitalization
  
• Update translations:
  Jiri Grönroos (fi); Ekaterine Papava (ka); Aurimas Aurimas Černius
  (lt); Pawan Chitrakar (ne); Juliano de Souza Camargo (pt_BR); Sergej
  A. (ru); Martin (sl); Anders Jonsson (sv); Sabri Ünal (tr); Yuri
  Chornoivan (uk); luming zh (zh_CN).